Between May 1966 and July 1969, Kim Jong Il conducted a comprehensive study and analysis of 31 major works by Marx, Engels and Lenin.
Recollecting those days, Kim Jong Il said, “At that time I read and debated until my eyes became bloodshot and my voice hoarse. But I shall never forget those days of reading and studying.”
One day Kim Jong Il and a group of officials were reading a classic work, which he planned to discuss with them a few days later. Since noon dark clouds had been gathering outside and it began to rain heavily, accompanied by a violent thunderstorm and lightning. But Kim Jong Il was unaware of all this; instead his eyes were glued to the pages of the book. Towards sunset he raised his eyes and looked out.
“When did it begin to rain?” he asked.
“It’s been raining since noon. There was even a thunderstorm,” answered one of the officials.
“Is that so? I was so engrossed in reading that I was unaware what was happening. Anyhow, it was a worthwhile day. I finished reading this book in the course of the afternoon.”